azure-speech 0.10.0

Pure Rust SDK for Azure Speech Service
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137

use std::fmt::Debug;

pub use ssml;
use ssml::{Serialize, SerializeOptions};

/// Trait to convert a type to SSML
///
/// It's already implemented for some basic types.
pub trait ToSSML: Debug {
    /// Convert the type to SSML
    ///
    /// The function will be called with the language and voice from the config.
    /// Up to you to use them or not.
    fn to_ssml(
        &self,
        language: crate::synthesizer::Language,
        voice: crate::synthesizer::Voice,
    ) -> crate::Result<String>;
}

impl ToSSML for String {
    fn to_ssml(
        &self,
        language: crate::synthesizer::Language,
        voice: crate::synthesizer::Voice,
    ) -> crate::Result<String> {
        serialize_to_ssml(&ssml::speak(
            Some(language.as_str()),
            [ssml::voice(voice.as_str(), [self.clone()])],
        ))
    }
}

impl ToSSML for &String {
    fn to_ssml(
        &self,
        language: crate::synthesizer::Language,
        voice: crate::synthesizer::Voice,
    ) -> crate::Result<String> {
        serialize_to_ssml(&ssml::speak(
            Some(language.as_str()),
            [ssml::voice(voice.as_str(), [self.as_str()])],
        ))
    }
}

impl ToSSML for str {
    fn to_ssml(
        &self,
        language: crate::synthesizer::Language,
        voice: crate::synthesizer::Voice,
    ) -> crate::Result<String> {
        serialize_to_ssml(&ssml::speak(
            Some(language.as_str()),
            [ssml::voice(voice.as_str(), [self.to_string()])],
        ))
    }
}

impl ToSSML for &str {
    fn to_ssml(
        &self,
        language: crate::synthesizer::Language,
        voice: crate::synthesizer::Voice,
    ) -> crate::Result<String> {
        serialize_to_ssml(&ssml::speak(
            Some(language.as_str()),
            [ssml::voice(voice.as_str(), [self.to_string()])],
        ))
    }
}

impl ToSSML for Speak {
    fn to_ssml(
        &self,
        language: crate::synthesizer::Language,
        voice: crate::synthesizer::Voice,
    ) -> crate::Result<String> {
        let language = self.language.as_ref().unwrap_or(&language);
        let voice = self.voice.as_ref().unwrap_or(&voice);

        serialize_to_ssml(&ssml::speak(
            Some(language.as_str()),
            [ssml::voice(voice.as_str(), [self.text.clone()])],
        ))
    }
}

impl ToSSML for ssml::Speak<'_> {
    fn to_ssml(
        &self,
        _language: crate::synthesizer::Language,
        _voice: crate::synthesizer::Voice,
    ) -> crate::Result<String> {
        serialize_to_ssml(self)
    }
}

fn serialize_to_ssml(speak: &impl Serialize) -> crate::Result<String> {
    speak
        .serialize_to_string(
            &SerializeOptions::default()
                .flavor(ssml::Flavor::MicrosoftAzureCognitiveSpeechServices),
        )
        .map_err(|e| crate::Error::InternalError(e.to_string()))
}

// Easy to use struct to create SSML speak elements.
#[derive(Debug, Clone, Default, Eq, PartialEq)]
pub struct Speak {
    pub(crate) text: String,
    pub(crate) voice: Option<crate::synthesizer::Voice>,
    pub(crate) language: Option<crate::synthesizer::Language>,
}

impl Speak {
    #[allow(dead_code)]
    pub fn new(text: String) -> Self {
        Self {
            text,
            voice: None,
            language: None,
        }
    }

    #[allow(dead_code)]
    pub fn with_voice(mut self, voice: crate::synthesizer::Voice) -> Self {
        self.voice = Some(voice);
        self
    }

    #[allow(dead_code)]
    pub fn with_language(mut self, language: crate::synthesizer::Language) -> Self {
        self.language = Some(language);
        self
    }
}